We refer to Confluence 5.9 and the projectdoc Toolbox 1.10 for our discussion.
Please bear in mind that projectdoc is our product - so there we are certainly biased in favour for the version of the projectdoc Toolbox.
Nonetheless we hope that our discussion is fair.
If you think this is not the case, especially if you feel we are lacking knowledge of features in favour of the Confluence macro, please give us a shout! We will check and adjust your issue with our presentation.
Summary
The Code Block Macro is a great tool to render visually appealing code on a page.
The Code Block Placeholder Macro adds features to use placeholders within the code to be replaced with document and space properties.
The following table lists features that are related to one of the macros discussed, but are implemented by different macros. In this case the macro providing the feature is listed. No extra cost is involved to use the mentioned macros, since all these macros are either part of Confluence or the projectdoc Toolbox Add-on.